diff options
Diffstat (limited to 'drivers/block/paride/friq.c')
| -rw-r--r-- | drivers/block/paride/friq.c | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/drivers/block/paride/friq.c b/drivers/block/paride/friq.c deleted file mode 100644 index 4f2ba244689b..000000000000 --- a/drivers/block/paride/friq.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - friq.c (c) 1998 Grant R. Guenther <grant@torque.net> - Under the terms of the GNU General Public License - - friq.c is a low-level protocol driver for the Freecom "IQ" - parallel port IDE adapter. Early versions of this adapter - use the 'frpw' protocol. - - Freecom uses this adapter in a battery powered external - CD-ROM drive. It is also used in LS-120 drives by - Maxell and Panasonic, and other devices. - - The battery powered drive requires software support to - control the power to the drive. This module enables the - drive power when the high level driver (pcd) is loaded - and disables it when the module is unloaded. Note, if - the friq module is built in to the kernel, the power - will never be switched off, so other means should be - used to conserve battery power. - -*/ - -/* Changes: - - 1.01 GRG 1998.12.20 Added support for soft power switch -*/ - -#define FRIQ_VERSION "1.01" - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/wait.h> -#include <asm/io.h> - -#include "paride.h" - -#define CMD(x) w2(4);w0(0xff);w0(0xff);w0(0x73);w0(0x73);\ - w0(0xc9);w0(0xc9);w0(0x26);w0(0x26);w0(x);w0(x); - -#define j44(l,h) (((l>>4)&0x0f)|(h&0xf0)) - -/* cont = 0 - access the IDE register file - cont = 1 - access the IDE command set -*/ - -static int cont_map[2] = { 0x08, 0x10 }; - -static int friq_read_regr( PIA *pi, int cont, int regr ) - -{ int h,l,r; - - r = regr + cont_map[cont]; - - CMD(r); - w2(6); l = r1(); - w2(4); h = r1(); - w2(4); - - return j44(l,h); - -} - -static void friq_write_regr( PIA *pi, int cont, int regr, int val) - -{ int r; - - r = regr + cont_map[cont]; - - CMD(r); - w0(val); - w2(5);w2(7);w2(5);w2(4); -} - -static void friq_read_block_int( PIA *pi, char * buf, int count, int regr ) - -{ int h, l, k, ph; - - switch(pi->mode) { - - case 0: CMD(regr); - for (k=0;k<count;k++) { - w2(6); l = r1(); - w2(4); h = r1(); - buf[k] = j44(l,h); - } - w2(4); - break; - - case 1: ph = 2; - CMD(regr+0xc0); - w0(0xff); - for (k=0;k<count;k++) { - w2(0xa4 + ph); - buf[k] = r0(); - ph = 2 - ph; - } - w2(0xac); w2(0xa4); w2(4); - break; - - case 2: CMD(regr+0x80); - for (k=0;k<count-2;k++) buf[k] = r4(); - w2(0xac); w2(0xa4); - buf[count-2] = r4(); - buf[count-1] = r4(); - w2(4); - break; - - case 3: CMD(regr+0x80); - for (k=0;k<(count/2)-1;k++) ((u16 *)buf)[k] = r4w(); - w2(0xac); w2(0xa4); - buf[count-2] = r4(); - buf[count-1] = r4(); - w2(4); - break; - - case 4: CMD(regr+0x80); - for (k=0;k<(count/4)-1;k++) ((u32 *)buf)[k] = r4l(); - buf[count-4] = r4(); - buf[count-3] = r4(); - w2(0xac); w2(0xa4); - buf[count-2] = r4(); - buf[count-1] = r4(); - w2(4); - break; - - } -} - -static void friq_read_block( PIA *pi, char * buf, int count) - -{ friq_read_block_int(pi,buf,count,0x08); -} - -static void friq_write_block( PIA *pi, char * buf, int count ) - -{ int k; - - switch(pi->mode) { - - case 0: - case 1: CMD(8); w2(5); - for (k=0;k<count;k++) { - w0(buf[k]); - w2(7);w2(5); - } - w2(4); - break; - - case 2: CMD(0xc8); w2(5); - for (k=0;k<count;k++) w4(buf[k]); - w2(4); - break; - - case 3: CMD(0xc8); w2(5); - for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]); - w2(4); - break; - - case 4: CMD(0xc8); w2(5); - for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]); - w2(4); - break; - } -} - -static void friq_connect ( PIA *pi ) - -{ pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - w2(4); -} - -static void friq_disconnect ( PIA *pi ) - -{ CMD(0x20); - w0(pi->saved_r0); - w2(pi->saved_r2); -} - -static int friq_test_proto( PIA *pi, char * scratch, int verbose ) - -{ int j, k, r; - int e[2] = {0,0}; - - pi->saved_r0 = r0(); - w0(0xff); udelay(20); CMD(0x3d); /* turn the power on */ - udelay(500); - w0(pi->saved_r0); - - friq_connect(pi); - for (j=0;j<2;j++) { - friq_write_regr(pi,0,6,0xa0+j*0x10); - for (k=0;k<256;k++) { - friq_write_regr(pi,0,2,k^0xaa); - friq_write_regr(pi,0,3,k^0x55); - if (friq_read_regr(pi,0,2) != (k^0xaa)) e[j]++; - } - } - friq_disconnect(pi); - - friq_connect(pi); - friq_read_block_int(pi,scratch,512,0x10); - r = 0; - for (k=0;k<128;k++) if (scratch[k] != k) r++; - friq_disconnect(pi); - - if (verbose) { - printk("%s: friq: port 0x%x, mode %d, test=(%d,%d,%d)\n", - pi->device,pi->port,pi->mode,e[0],e[1],r); - } - - return (r || (e[0] && e[1])); -} - - -static void friq_log_adapter( PIA *pi, char * scratch, int verbose ) - -{ char *mode_string[6] = {"4-bit","8-bit", - "EPP-8","EPP-16","EPP-32"}; - - printk("%s: friq %s, Freecom IQ ASIC-2 adapter at 0x%x, ", pi->device, - FRIQ_VERSION,pi->port); - printk("mode %d (%s), delay %d\n",pi->mode, - mode_string[pi->mode],pi->delay); - - pi->private = 1; - friq_connect(pi); - CMD(0x9e); /* disable sleep timer */ - friq_disconnect(pi); - -} - -static void friq_release_proto( PIA *pi) -{ - if (pi->private) { /* turn off the power */ - friq_connect(pi); - CMD(0x1d); CMD(0x1e); - friq_disconnect(pi); - pi->private = 0; - } -} - -static struct pi_protocol friq = { - .owner = THIS_MODULE, - .name = "friq", - .max_mode = 5, - .epp_first = 2, - .default_delay = 1, - .max_units = 1, - .write_regr = friq_write_regr, - .read_regr = friq_read_regr, - .write_block = friq_write_block, - .read_block = friq_read_block, - .connect = friq_connect, - .disconnect = friq_disconnect, - .test_proto = friq_test_proto, - .log_adapter = friq_log_adapter, - .release_proto = friq_release_proto, -}; - -static int __init friq_init(void) -{ - return paride_register(&friq); -} - -static void __exit friq_exit(void) -{ - paride_unregister(&friq); -} - -MODULE_LICENSE("GPL"); -module_init(friq_init) -module_exit(friq_exit) |